1·One reason is that radars used to track storms can detect water in the atmosphere only once it has condensed into clouds or raindrops, and thus reflects the beam.
一个原因是被用来追踪雷暴的雷达只可以发现大气中凝结成云或雨滴的水，因为水能以这样的形态反射波束。
2·Within ten years, driverless vehicles that use lasers and radars to sense their surroundings will be able to thread their way through traffic.
十年之内，无人驾驶车辆将能够在道路交通中凭借激光和雷达感知周围环境而穿行。
3·The radar fleet for the field project includes 10 mobile radars, which will track winds and precipitation in the tornadoes and the surrounding area.
这个区域项目的雷达车队有10部移动雷达，用于追踪龙卷风极其附近区域的风况和降水。
4·The lasers by the runways act a bit like radars.
机场跑道两侧的激光起到一些类似雷达的作用。
5·Onboard radars provide information on clouds and precipitation, but the worst turbulence can be far away from the worst rain.
陆上雷达提供有关云层和降水的信息，但极为恶劣的气旋要远比暴雨凶险。